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<h1 class="topictitle1">步骤2：检查HDFS ACL的开关状态</h1>
<div><p>如果您需要备份HDFS文件的ACL信息，那么执行备份前请确认大数据平台上已开启HDFS ACL配置开关。否则请忽略本节。</p>
<div class="section"><h4 class="sectiontitle">操作步骤</h4><p><strong>接入场景为FusionInsight Manager或CDH</strong></p>
<ol><li><span>使用浏览器，登录FusionInsight Manager。</span><p><p>本节以FusionInsight 6.5.1版本为例说明如何检查HDFS ACL的开关状态。不同大数据平台操作略有差异。</p>
</p></li><li><span>选择<span class="uicontrol">“集群 &gt; HDFS”</span>。</span></li><li><span>单击“配置”。</span></li><li><span>查找参数<span class="uicontrol">“dfs.namenode.acls.enabled”</span>，检查该参数的值是否为<span class="uicontrol">“true”</span>。</span><p><div class="note"><img src="public_sys-resources/note_3.0-zh-cn.png"><span class="notetitle"> </span><div class="notebody"><p>您可以通过搜索关键字<span class="uicontrol">“dfs.namenode.acls.enabled”</span>或<span class="uicontrol">“acl”</span>快速查找参数。</p>
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<ul><li>如果<span class="uicontrol">“dfs.namenode.acls.enabled”</span>的值为<span class="uicontrol">“true”</span>，则备份过程中会默认备份HDFS文件的ACL信息。</li><li>如果<span class="uicontrol">“dfs.namenode.acls.enabled”</span>的值为<span class="uicontrol">“false”</span>，而您又有备份HDFS文件ACL信息的需求，请修改<span class="uicontrol">“dfs.namenode.acls.enabled”</span>的值为<span class="uicontrol">“true”</span>，修改后按照提示重启HDFS服务。</li></ul>
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